CytomegalovirusCytomegalovirus InfectionsImmunosuppression Therapy
Dr. Richard J. Rohrer, MD
NPI1558316901
- Medicare services, 2019
- 41
- Part D claims, 2016
- 226
- Publications
- 2
- Industry payments
- $117
- Affiliated sites
- 2
- Practice address
- 275 Varnum Ave Suite 203 Suite 203, Lowell, MA 01854-2109
- Practice phone
- Call (978) 458-4300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Riverside Surgical Associates - Lowell (Varnum Ave)
Surgical practice · Lowell, Massachusetts
Find Dr. Rohrer's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Richard J. Rohrer is a general surgeon in Lowell, Massachusetts
Dr. Rohrer practices at Riverside Surgical Associates - Lowell (Varnum Ave) in Lowell, Massachusetts.
Dr. Rohrer's NPI, 1558316901, was assigned on May 24, 2006. Dr. Rohrer graduated from Columbia University College of Physicians and Surgeons in 1977. Dr. Rohrer holds Massachusetts license 44452.
NPI and contact details
- NPI
- 1558316901NPI Registry (opens in a new tab)
- NPI enumeration date
- May 24, 2006
- NPI status
- Active
- Practice phone
- (978) 458-4300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Richard J. Rohrer practices at 2 locations in Lowell, Massachusetts
Dr. Rohrer's primary practice is Riverside Surgical Associates - Lowell (Varnum Ave), at 275 Varnum Ave Suite 203 Suite 203, Lowell, MA 01854-2109. The practice phone is (978) 458-4300. The NPI Registry lists Dr. Rohrer's practice address as 295 Varnum Ave, Lowell, MA 01854.
- Riverside Surgical Associates - Lowell (Varnum Ave)Primary275 Varnum Ave Suite 203 Suite 203, Lowell, MA 01854-2109Phone(978) 458-4300
- NPI Registry address295 Varnum Ave, Lowell, MA 01854 · Middlesex CountyPhone(978) 458-4300
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Richard J. Rohrer is affiliated with 2 sites of care and 2 medical groups
Dr. Rohrer's primary practice is Riverside Surgical Associates - Lowell (Varnum Ave) in Lowell, Massachusetts. The medical group on file is Riverside Surgical Associates. Dmand AI also links Dr. Rohrer to 1 more group practice or clinic and 1 medical group, each named with a free account.
Riverside Surgical Associates - Lowell (Varnum Ave)Primary
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Richard J. Rohrer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rohrer practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Riverside Surgical Associates - Lowell (Varnum Ave) | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Richard J. Rohrer is one of 732 general surgeons in Massachusetts
Surgery is Dr. Rohrer's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Rohrer is licensed in Massachusetts.
Specialties and state licenses
- Surgery, MassachusettsPrimary
General surgeons near Dr. Rohrer
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Richard J. Rohrer billed Medicare for 41 services in 2019
CMS data shows 41 Medicare services from Dr. Rohrer across 3 procedure codes in 2019. Medicare paid $9,627 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 201941
Paid by Medicare$9,627
Procedure codes3
Dr. Rohrer's Medicare services by type, 2017 to 2019
- 2017
- 2019
- Office and hospital visits
- 2017: 602019: 2952%
- Surgery
- 2017: 352019: 1266%
Dr. Rohrer compared with the Massachusetts median for general surgeons, 2019
- Dr. Rohrer
- Massachusetts median
- Medicare services
- 41vs 20080% below
- Part D claims
- 226vs 2210.3 times
Medians across 688 general surgeons in Massachusetts with Dmand AI profiles that report each measure.
Dr. Rohrer's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Richard J. Rohrer's patients have a median age of 40
Across all payers, Dmand AI patient panel data puts Dr. Rohrer's median patient age at 40, with 0% women.
Dr. Rohrer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 40
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Richard J. Rohrer wrote 226 Medicare Part D claims in 2016
In 2016, Dr. Rohrer wrote 226 Medicare Part D claims. They cover 10 drugs, with $30,850 in total drug cost.
Part D claims, 2016226
Drugs named by CMS10
Total drug cost$30,850
Dr. Rohrer's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Richard J. Rohrer has 2 publications on record
Dmand AI links 2 papers to Dr. Rohrer. The most frequent topics are Cytomegalovirus, Cytomegalovirus Infections and Immunosuppression Therapy. Dr. Rohrer has published most often in Liver Transpl. Dr. Rohrer's most frequent co-authors are Richard B . Freeman, MD, Natalie E. Nierenberg, MD and David R. Snydman, MD.
Papers2
Topics Dr. Rohrer writes about most
- Cytomegalovirus
- Cytomegalovirus Infections
- Immunosuppression Therapy
- Immunosuppressive Agents
- Liver Transplantation
Dr. Rohrer's most frequent co-authors
- Richard B . Freeman, MD2 shared papers
- Natalie E. Nierenberg, MD2 shared papers
- David R. Snydman, MD2 shared papers
Recent publications by Dr. Rohrer
Liver Transpl
Anti-Infective AgentsCytomegalovirusCytomegalovirus Infections
See who Dr. Rohrer researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Rohrer works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Richard J. Rohrer received $117 in industry payments from 2016 to 2018
CMS Open Payments shows 6 general payments to Dr. Rohrer from 4 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $42.
General payments to Dr. Rohrer by program year, 2016 to 2018
Companies that paid Dr. Rohrer the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Richard J. Rohrer graduated from Columbia University College of Physicians and Surgeons
Dr. Rohrer graduated from Columbia University College of Physicians and Surgeons in 1977.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Richard J. Rohrer's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Richard J. Rohrer
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Richard J. Rohrer's NPI number?
Dr. Richard J. Rohrer's NPI number is 1558316901. It was assigned on May 24, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Richard J. Rohrer?
Dr. Richard J. Rohrer is a general surgeon in Lowell, Massachusetts. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Richard J. Rohrer practice?
Dr. Rohrer practices at 275 Varnum Ave Suite 203 Suite 203, Lowell, MA 01854-2109. Dr. Rohrer also practices at 295 Varnum Ave, Lowell, MA 01854. Dr. Rohrer's primary practice is Riverside Surgical Associates - Lowell (Varnum Ave) in Lowell, Massachusetts. Dmand AI also links Dr. Rohrer to 1 group practice or clinic and 1 medical group.
What is Dr. Richard J. Rohrer's office phone number?
The practice phone on file for Dr. Rohrer is (978) 458-4300.
What is Dr. Richard J. Rohrer's medical license number?
Dr. Rohrer holds Massachusetts license 44452.
What medical group is Dr. Richard J. Rohrer part of?
Dr. Rohrer is linked to Riverside Surgical Associates. Dmand AI links Dr. Rohrer to 1 more medical group.
Does Dr. Richard J. Rohrer accept Medicare?
Yes. CMS data shows Dr. Rohrer billed Medicare for 41 services in 2019.
What services does Dr. Richard J. Rohrer bill to Medicare?
In 2019, Dr. Rohrer's most billed Medicare services were office visit, established patient (99213), office visit, new patient (99204) and surgery: heart and blood vessels (36818).
Where did Dr. Richard J. Rohrer go to medical school?
Dr. Rohrer graduated from Columbia University College of Physicians and Surgeons in 1977.
What drugs does Dr. Richard J. Rohrer prescribe most?
In 2016 Medicare Part D data, Dr. Rohrer's most prescribed drugs by claims were Mycophenolate Mofetil, Ursodiol and Tacrolimus.
Show 4 more questionsShow fewer questions
Has Dr. Richard J. Rohrer received payments from drug or device companies?
CMS Open Payments shows $117 in general payments to Dr. Rohrer from 4 companies from 2016 to 2018. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Richard J. Rohrer been practicing?
Dr. Rohrer graduated from medical school in 1977, 49 years ago.
Does Dr. Richard J. Rohrer do research?
Dmand AI links 2 publications to Dr. Rohrer.
Who does Dr. Richard J. Rohrer publish with?
Dr. Rohrer's most frequent co-authors are Richard B . Freeman, MD (2 shared papers), Natalie E. Nierenberg, MD (2 shared papers) and David R. Snydman, MD (2 shared papers).
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